'Hydrogen'

' henry\n1H\n-\nâ†'\nH\nâ†"\nLi\n\n diurnal table\n\n- ← affectionateness content â†' helium\n\ncoming into court\n pallid torpedo\n\nPurple burn down in its germ plasm state\n\n phantasmal lines of enthalpy\n ordinary properties\nName, symbol, bit enthalpy, H, 1\nPronunciation /ˈhaɪdrÉ™dÊ'É™n/ HY-drÉ™-jÉ™n[1]\nElement kinsperson nonmetal\nGroup, period, settlement 1, 1, s\n quantity atomic burden 1.008(1)\nElectron frame 1s1\n1\n\n account statement\nDiscovery total heat Cavendish[2][3] (1766)\nNamed by Antoine Lavoisier[4] (1783)\n somatogenic properties\nColor colorless\nPhase go down on\nDensity (0 °C, 101.325 kPa)\n0.08988 g/L\n lucid density at m.p. 0.07 (0.0763 solid)[5] g·cmâˆ'3\n melted density at b.p. 0.07099 g·cmâˆ'3\n resolve ap omen 14.01 K, -259.14 °C, -434.45 °F\nBoiling point 20.28 K, -252.87 °C, -423.17 °F\n tierce point 13.8033 K (-259°C), 7.042 kPa\nCritical point 32.97 K, 1.293 MPa\nHeat of compact (H2) 0.117 kJ· counterspyâˆ'1\ nHeat of drying up (H2) 0.904 kJ·molâˆ'1\nMolar heat capacity (H2) 28.836 J·molâˆ'1·Kâˆ'1\nVapor military press\nP (Pa) 1 10 atomic number 6 1 k 10 k 100 k\nat T (K) 15 20\n\nAtomic properties\n oxidization states 1, -1\n(amphoteric oxide)\nElectronegativity 2.20 (Pauling scale)\n ionization energies 1st: 1312.0 kJ·molâˆ'1\ncovalent radius 31±5 pm\nVan der Waals radius 120 pm\nMiscellanea\n crystallizing structure hexangular\nMagnetic rescript diamagnetic[6]\nThermal conduction 0.1805 W·mâˆ'1·Kâˆ'1\n fixedness of sound ( shoot a line, 27 °C) 1310 m·sâˆ'1\nCAS registry number 1333-74-0\n near stable isotopes\n principal(prenominal) article: Isotopes of hydrogen\niso NA half life DM DE (MeV) DP\n1H 99.985% 1H is stable with 0 neutrons\n2H 0.015% 2H is stable with 1 neutron\n3H trace 12.32 y βâˆ' 0.01861 3He\n\nv ·t ·e· r\n\nHydrogen is a chemic segment with symbol H and atomic number 1. With an average atomic weight of 1.00794 u (1.007825 u for hydrogen-1), hydr ogen is the lightest element and its monatomic form (H1) is the to the highest degree abundant chemical substance, constituting roughly 75% of the Universes baryonic mass.[7] Non-remnant stars are in the first place composed of hydrogen in its germ plasm state.\n\nAt standard temperature and pressure, hydrogen is a colorless, odorless, tasteless, non-toxic, nonmetallic, highly combustive diatomic gas with the molecular ruler H2. Naturally occurring atomic hydrogen is high-flown on creation because hydrogen quickly forms covalent compounds with about elements and is present in the water shred and in most organic compounds. Hydrogen plays a especially important manipulation in acid-base alchemy with many reactions exchanging protons in the midst of soluble molecules.\n\nIn ionic compounds, it stern take a negative comportment (an anion known as a hydride and create verbally as Hâˆ'), or as a positively charged...If you want to shoot a wide-cut essay, order it on our website:

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